Winding and setting mechanism for watches.



No. 883,427. PATENTED MAR. 31, 1908.

H. SANDOZ.

WINDING AND SETTING MECHANISM FOR WATCHES.

APPLICATION FILED 0GT.1. 190a.

lv z v A b m y n )I y ww V f 6 w Hm U V V: 1:: /{y I A 55 the pin 8 and with the other arm,

UNITED STA s HENRI SANDOZ, or TARANNES, SWITZERLAND.

WIN-DING AN]? SETTING TUE WATCHES.

' Specification of Letters Patent.

"Ia'tented March 31,1908.

Application filed Octobsrd, 190's. smn in). 336,882.

'Tu clliuhom it may concern: Be it known that I, HENRI SANDOZ, a citizen of the Swiss Republic, residing at Tarannes, canton of Bern, 'Switzerland,:have in vented certain new and useful Im rovements in Winding and Setting Mec anism for Watches; and 1 do hereby declare the .fol+ lowing to he a full,clear,;and exact descri tion of the invention, such as will. enabe others skilled in the art to which it appertains to make and use the same.

The aocom anying drawing given by we of example, il ustrates two forms of the win ing and setting mechanism whichconstitutes the invention.

Figure 1 is an elevation partly in section of one form. of the invention; Fig. 2 is a ien-- itudinal section through A B in Fig. i1; and ig. 3 is a longitudinal section of a modification.

This mechanism is'of the :kind in which a crown stem firmly connected with the watch case is supported in the pendent of this case by a s ring and screw device termed a sleeve ar. The square part of the wind ing stem a is fitted so that it can move vfreely in the longitudinal direction in a sleeve which rotates in the .plate a and a -brid e or cock 1 where it is supported axiall y a bearin e. In the square hole ifor me" in the sleevethe lower end of the 'crown stem 9 engages which is ifurhished as stated above with the device termed a sleeve bar which supports it in the pendant, this device being 35 wcl -known 'but not shown in the drawing. On a cylindrical bearing 9 of the sleeve b the winding"- inion h is loosely mounted and is supports in a recess i in the .plate c. the ower part the pinion h is provided with the usual clutch teeth k with which similar teeth Z on the sliding sleeve pinion m-engage for effecting the winding, .the sliding sleeve pinion havin a free movement along the s uare part 0? the stem a. The, lower end a .5 o" the rod a rests on the end 0 of a lever p,

ivoted at q, the other end 1' of the lever bearmg against a pin 8 fixed to anarm t, )ivoted at u and engagin r in the groove 1) of t e slid. ing sleeve m. Tlie lever p is placed on one side and the arm t on the other side of the plate 0 in which is a slot as through which the pin 8 of the' arm t,projects.

A U-shaped spring y placed in a recess .2 of the plate rests with one of its arms against which is b for insuring, through this s directly engage with the intermediate whee but that stronger than the former against .a pin 1 fixed :at the end 9" of the lever p in such -a I manner that this spring tends to eause the said end a" of the lever K30 rbear constantly against the pins, .and it end 0 ofthers'ame 6 leveragainst the end 'n of the-stem a. The spring may if desired be anchored in the recess 2 v means suchrforinstanceasscrews 2.

All 2 the intermediate wheel 3 is mounted with which the'sliding sleeve pinion m for 5 setting .the hands engages.

When :the stemeis ushed in-hythe crown stem f, the parts of 't mechanism occupy the position .mdioated'inthe drawing, that is to say, that'thesliding sleeve) inion m is-out of engagement with the w col 3 and :is clutched to the windin pinionih through the teeth k 1 respectively 0 these two parts. in this position of the .parts of ithe mechanism thewinding is efiected and it is'to he observed that the disengagingand engaging of the sliding sleeve pinion m'with the -w1nd1ng inionh is assured 'by the spring g which, as-w1l heseen lateron, has a doubleaction. It will also :be observed that in this position there is still so a longitudinal play of the stem sufficient ring, the workof the secret I spring w ich, in .double cased watches known as hunt-ens", determines the opening of the bottom of the case that covers the dial and the glass. This long'itudinal play is due to the free space be tween the end at of the rod and the bottom, 4 in which it is adjusted. If the crown stem benow ulled outward pressure of the stems on the ever go is relieved and the s ring 1 will cause this lever to oscillataend t clever acting against the pin 8 of the arm t causes the arm to oscillate, so that s moves to the dotted position .9 (Fig. 1), while the point 5 of the arm t moves to 5, thus utting the sliding-sleeve inion m in gear wit the intermediatewhee 3-forfi etting the hands.

It will he observed that it is not the stem f or the stem (1 which as is generally the case, m0

causes theaaliding sleeve inion to this suction is effectively performed by the spring y when the lever p is relieved of the pressure of the stems f and a. This arrangement efiects the engagement'of the slidm sleeve pinion m with the intermediate whee 3 without shocks being transmitted to the hands.

The sleeve 1) may, if necessary, be replaced by a corresponding enlargement in one piece with the winding stem, as shown in Fig. 3.

In that case the winding pinion h is fitted loosely on the cylindrical art 6 of the stem a and the outer part 7 of his stem can rotate freely and move axially between the plate 0 and the bridge or cock (Z, this part 7 having a square hole 8 intended for the reception of the lower end of the crown stem similarto f (Fig. 2). Inthis modification all the other parts are similar to those in the form first described with reference to Figs. 1 and 2 and the working is the same. The forms and the dimensions of the parts may differ.

That I claim and desire to secure by Letters Patent is I 1 A winding and setting mechanism of the negative type for watches, comprising a winding stem, a crown stem, means for supporting the crown stem in the watch pendam, a winding inion on the winding stem, an intermediate and setting wheel mounted near the winding stem, an axially movable sleeve on the winding stem having gear teeth at one end, clutch teeth at the other end and a circumferential groove, an arm pivoted at one end and arranged to engage with its free end in the groove, a pin on the pivoted end of the arm, a two-armed lever arranged with one end in contact with said pin and the other end in contact with the inner end of the winding stem, a pin on the end of the lever remote from the stem, a single U-shaped spring bearing against said pin on the ever, and against the pin on the pivoted arm aforesaid, and adapted to hold the lever and arm in operative connection and toact through the said arm on the axially movable sleeve to eiiect its engagement with the winding pinion or the hand setting wheel according to the position of the crown stem.

2. A winding and setting mechanism comprising in combination, a winding stem, a winding gear, a settin" gear, an intermediate gear adapted to be shifted into operative relation with either said windingor' settin gear, said intermediate gear being operated by said winding stem, a shifting member for said intermediate gear, a movable member operated by said winding stem, and yielding means having two portions engaging said shifting and movable members respectively and being normally under tension to act initially upon movement of said stem to yieldingly shift and-hold said intermediate gear into operative relation with either said wmd- 'moyable members and servin ing or setting gear, one of said portions having a greater tension than the other.

3. A winding and setting mechanism comting gear and driven from said stem, 9. shiftmg member for said intermediate gear, a movable member actuated by said stem, and a single sprin engaging said shifting and when said stem is operated to yieldingly 's ift and hold said intermediate member 111 driving relation with either said winding or said setting gear, said spring being tensloned to exert a greater ressure on the movable member than on the shifting member whereby said intermediate ear'is normally held in driving relation with said winding gear.

4. A winding and setting mechanism comprising in combination, a winding stem, 0. windin gear, a setting gear, an intermediate gear a 'apted to be shlftedinto driving relation with said winding or setting gears and driven by said windin stem, a shifting member for said intermediate gear, a movable member actuated by said stem, and a spring engaging said shifting and movable members and acting initially when said stem is operated to yieldingly shift and hold said intermediate gear in driving relation with either said win ing or said setting gear, said spring being tensioned to exert an unequal pressure on said movable ,and shifting members.

5. A winding and setting mechanism comprising in combination, a winding stem, a winding member, a setting member, and otermedlate member adapted to be shifted into driving relation with either said winding or setting members, said intermediate'mernber being driven from said stem, mechanism operatively associated with said stern and intermediate member, and yieldingly acting differential means operating on said mechanism and servin upon movement of said stem to initially shi t and hold said intermediate member in driving relation with either said .winding or said setting member. I

In testimony whereof he has afiixed his signature, in presence of two witnesses.

HENRI SANDOZ.

Witnesses: A. MATTHEW DoUL, R. G. Corner. 

